TD4 Coolant Temp Sensor

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Elv73

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Fife
Quick question, Is it possible to change the coolant temp sensor on a TD4 without draining the coolant?
 
As above. Make sure the engine is cold (do it before the first start of the day). But before you remove the CTS, remove the pressure cap and cover the opening with a plastic bag, then refit the cap. When the CTS is removed, a partial vacuum is created, which reduces the coolant that can escape.
 
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